Fire-box arch and arch brick



R. J. HlMMELRlGHT FIRE BOX ARCH AND ARCH BRICK Oct. 16, 1923.

2 Sheets-Sheet 1 Filed May 12, 1921 Illlllllllllll J. HIMMELRIGHT- FIREBOX ARCH AND ARCH'BRIGK Oct. 16 1923.

' File d May 12, 1921 2 Sheets-Sheet 2 Patented Get. 16, W23.

RALEIGH .T. HELRIGHT, OF ENGLEWOOD, NEW YORK, ASSIGNGR T0 AMERICANARCH". COMPANY, A CORPORATION OF DELAWARE.

FIRE-BOX AIR-CH AND ARCH BRICK.

Application filed ma 12, 1921.

T 0 all whom it may concern:

Be it known that I, RALEIGH J. HIMMEL- RIGHT, a citizen of the UnitedStates, residing at Englewood, in the county of Bergen and State of NewJersey, have invented certain new and useful Improvements in Fire- BoxArches and Arch Bricks, of which the following is a specification.

This invention relates to fire box arches oil the type which has becomeknown in the art as sectional, that is of the type which are composed orbuilt up of a plurality of individual bricks suitably supported adjacentone another to form in combination the arch or bafiie. It is especiallyusein] in and has been particularly designed for a locomotive fire boxwhich is equipped with circulation tubes upon which the bricks of thearch are supported. In arches of this type which are so supported it iscustomary to place a series of bricks at each side of the fire box whichrest at their inner ends upon the outermost tubes and at their outerends lean against the side sheets and my inv ntion directly relates toan improved form oi brick for use in such portions of an arch.

Bricks of the character to which my invention particularly relates areknown in the art as side bricks and in this application they will bereferred to by such name.

It is the primary object of my invention to provide a side brick fortube supported fire box arches which will have a firm and secure seat onthe tube and one which will maintain the relation between the brick andthe tube longitudinally of the tube fixed while at the same timepermitting variations in the relation of the brick with respect to theside sheet against which it is leaning. It is also an object of myinvention to provide a side brick which will accommodate itself tovariations in the size of the tube upon which it rests and one whichwill have a stable bearing upon the tube regardless of slightinaccuracies which occur in manufacture. In applying side bricks it ishighly essential that they have at all times this firm and secureseat'on the tube because if they do not the result will be an unstablearrangement with the danger of having bricks drop into the fire bed.

Another object of my invention is to provide a side brick which willmore readily accommodate itself to fire boxes in which the Serial N0.468,843.

side sheets run at a slight angle with respect to the tubes, in otherwords in fire boxes which are known as taper fire boxes.

The foregoing together with any other objects which are incident to myinvention or which may appear hereinafter, I obtain by means of aconstruction which is illustrated in the accompanying drawings, whereinFig. 1 is a plan view of my improved brick; Fig. 2 is a'side elevation;Fig. 3 is a plan view of the undersurface of the brick; Fig. 4 is an endelevation of the tube end of the brick; Fig. 5 is a section on the line5--5 of Fig. 2; Fig. 6 is a transverse section through a locomotive firebox and its arch illustrating the manner in which my improved brick isapplied; Fig. 7 is a section on the line 7-7 of 3; Fig. 8 is a partiallongitudinal section through the forward end of a locomotive fire boxhaving a side sheet which is disposed at an angle with respect to theadjacent tube and which illustrates an arch having side bricks of thetype formerly in use; Fig. 9 is a section similar to that of Fig. 8illustrating side bricks of my improved construction; Fig. 10 is afragmentary section through a locomotive fire box looking directly downupon a portion of an arch in .which the side bricks are of the typeheretofore in use; and Fig. 11 is a section similar to that of Fig. 10illustrating side bricks of my improved construction. Figs. 10 and 11illustrate fire boxes in which the side sheets are dispesedapproximately parallel with the tubes, and Fig. 12 is an end View of theside sheet end of the brick.

In the accompanying drawings I have designated my improved side brick bymeans of the reference character S and it will be noted that at the tubeengaging and I have provided spaced lugs 1 which are formed in apeculiar manner to be described to provide socket-like recessesembracing the tube. These sockets or recesses do not contact with thetube throughout their entire surface as has heretofore been customary inconstructing arch bricks, but instead they are so formed as to providetwo points of contact on the tube spaced circum erentially thereof. Byreferring to Fig. 7 it will be seen that the surface of each recess iscomposed of two arcuate planes 2 and 3 struck preferably with the sameradius 4, but from difierent cone ters respectively and 6, the center 5for the upper are 2 being located at a point somewhat below the centerof the tube indicated in dotted lines at 7 and the center 6 for the 5lower arc 3 being located at a point somewhat above the center of thetube. The two arcuate surfaces intersect at some point near the base ofthe tube embracing socket which point I have indicated by the referencecharacter 8. It will be readily apparent that such a structure will makethe bricks accommodable within reasonable limits to tubes of differentsizes. The circumference of the tube at no time touches the base 8 ofthe re cess on the line where the two arcuate surfaces intersect and thetube is therefore embraced between the two surfaces which provide linecontacts or bearings on the tube at points spaced circumferentiallythereof. The construction provides a very firm seat and stableapplication especially in view of the fact that the arrangement is suchas to provide spaced bearings upon the tube, one at each side of thetube engaging end. There is a recess 9 between the lug structures 1 justdescribed.

The outer end of the brick which rests against the side sheet isprovided with a downwardly and inwardly inclined curved surface 10 whichextends transversely of the brick from one side to the other andimmediately adjacent the upper edge thereof.

' This surface, at approximately its middle point merges into what maybe termed a taper or wedge shaped rib 11 also extending downwardly andinwardly, but at an angle which is somewhat more sharp than the angle ofthe surface 10 as clearly illustrated in the figures. By forming thisend of the brick in the manner just described there is provided a singlepoint of support, by means of which it is possible for the brick toassume various angular relations with respect to the side sheet in adirection longitudinally of the tube as well as transversely of the tubewithout changing the relation between the brick and the tube in adirection longitudinally of the tube. Such variations arise from anumber of causes chief of which are differences in the distances betweena tube and a side sheet at different points along the length of the tubeand irregularities orinaccuracies in the brick itself which creep induring manufacture and which will sults sought, however, have been inmany cases defeated by the side formations of the former bricks ininstallations where a plurality of side bricks are arranged in a rowwith their adjacent side faces touching one another. I, therefore,propose to improve the side bricks already known not only in the manneralready set forth, but also in an additional manner now to be described.

I construct my side brick with the sides 12 tapering inwardly from thetube engaging end to the side sheet engaging end as very clearl shown inFigure 1, 3, 9 and 1-1. The side bricks illustrate in Figures 8 and 10illustrate for purposes of comparison the structure at present employed.It will be noted that the side bricks S in these two figures are thesame width at the tube end as at the side sheet engaging end, therefore, when a plurality of them are arranged in a row with the sidescontacting, the very purpose of the rounded ends is often defeated bythe fact that the bricks are jammed up against one another so that nopossible adjustment or accommodation with respect to the side sheet ispossible. In manufacture it is often impossible during the processes ofmolding and baking to maintain a true right angle between either one orboth of the parallel sides and the tube engaging end. If, however, thebricks are relieved at the sides by tapering or otherwise forming themas herein proposed so that there will be spaces 13 between adjacentbricks in a row it is possible for the bricks to accommodate themselvesto any variations above enumerated while at the same time maintaining afirm and stable seat on the tube without altering the relation betweenthe brick and the tube in a direction longitudinally thereof. A brickwhich is formed to permit such accommodation and adjustment might wellbe termed, a brick which is relieved at the sides and the spaces betweenbricks might well be called brick accommo dating spaces.

The under face of the brick is provided with pockets 14 for the purposeof breaking up and thoroughly mixing the products of combustion in amanner well known in the art.

In Figs. 8 and 10 I have somewhat exaggeratedly illustrated in dottedlines the positions which might be assumed by the side bricks S due toany, or to a combination of the undesirable possibilities hereinbeforebrought out. If one of a series of side bricks S of the type heretoforeused should for any reason not seat accurately on the tube it would havea tendency to throw all the others of the series out of position butwhere my improved side bricks are used, as in Figs. 9 and 11, this wouldnot occur. In other words, where my improved side bricks are used eachone of a series is perfectly free to adjust itself individually to itsproper position on the tube without interference from those at each sidethereof. In this way a stable application of all side bricks isassure-d.

I claim:

1. A brick for tube-equipped locomotive fire box arches which is adaptedto be supported betweenatube andaside of the box, having one end formedwith a tube engaging face and the other end having a side sheet engagingface, arranged to provide a single point of support whereby to permitangular variations between the brick and the side without changing theangular relation of the brick to the tube at the tube engaging end inthe direction longitudinally of the tube, said brick being narrower atthe end which engages the side of the fire box than at the end 20 whichengages the tube.

2. A brick for tube-equipped locomotive fire box arches which is adaptedto be supbrick being cut away at its sides from a point adjacent .thetube engaging end to the end which engages the side of the fire box. 3.A brick for sectional arches in tubeequipped fire boxes which is adaptedto be supported between a tube and a side of the box with one endresting on the tube andthe other end leaningagainst the side having aside sheet engaging face arranged to provide a single point of supportwhereby to permit-the brick to assume various angular relations withrespect to the side in directions both longitudinally and transverselyof the tube and said brick being cut away at its sides whereby, when anumber are arranged in a row adjacent to one another, proper functioningof the said surface is ensured for the purpose of maintaining a fixedangular relation between the brick and the tube in a directionlongitudinally of the tube.

4. A brick for fire box arches adapted to be supported between a tubularmember within the'fire box and a side of the 'box, having a, memberengaging face at one end providing spaced bearings each of which hastwo. member contacting surfaces arranged to seat thereon at pointsspaced circumferentially thereof, said brick having at its other end aside sheet engaging face arranged to provide a single point of sup portwhereby to permit of various angular relations-between brick and side orbetween side and member without changing the angular relation betweenthe brick and the member in a direction longitudinally of the member,and said brick being made smaller from the member engaging end to theend which engages the side of the box whereby, when a number of bricksare arranged in a row adjacent to one another, there are providedtherebetween brick accommodatmg spaces as it were.

5. A brick for tube-equipped locomotive firebox arches which is adaptedto be supported between a tube and a side of the box, having one endformed with a tube enga ing face and the other end having a si e sheetengaging face arranged to provide a single point of support whereby topermit angular variations between the brick and the side withoutchanging the angular relation of the brick to the tube at the tubeengaging end in the direction longitudinally of the tube, said brickbeing narrower at the end which is supported from the side of btgie boxthan at the end which engages the tll In testimony whereof I havehereunto signed my name.

RALEIGH J. HIMMELRIGHT.

